Coincidentally, I am designing a 3 phase DC/DC power circuit that currently delivers 0.84V @80A w/ ~92% efficiency based around the LTC-3829, tunable @5mV increments, powered by a 12V ATX supply (+-10 nominal). Each phases lower FET dissipates a maximum of 0.75W, which is the highest of any single component in the design. I've got roughly 20 hours into the design. Further, synching does not eliminate ripple. In ideal situtations yes, however that's why any spice simulator worth using allows sweeps of tolerance ranges. The reality is that the load is not uniform across the phases. I'm not even going to address the rise time and caps comment as its obvious you have little experience with this type of circuitry.
The reason I mention the inefficiencies of their supply choice are that the poor choice of external PSU was due to "lower heat" then a week later post that they are dumping an extra 100W of heat into the chassis, which about what a good PSU would do (80% vs 90+% designs that are readily available). All it takes is looking at any motherboard, gpu, or other high amperage, low volt device and making a few emails.
I figured you were an inductorologist. (you claim to be anyways)
I'm curious if your design uses off the shelf inductors.
I clearly stated that better designs were possible.
Your design is still on the drawing board.
Their supply is pictured mounted on a printed circuit board.
Why would you design a supply if there are such good choices available already?
Is it possible that the price and/or availability was a factor in their decision?
My point is that it is likely good enough for the application.
It comes down to price and availability.
They had to pull the trigger a while ago.
All designs involve compromise.
As an inductorologist you might naturally have different ideas in your field of study.
Do you also design ASICS, and have connections to get them to market quickly?
There's money to be made in them thar hills!
Why don't you contact KnC and see if they are interested in your design for future products?
You could also sell retrofit parts for rev 1 miners.
According to you everyone who purchases a miner will need one.
If you are right and the rise time prevents proper function of the miner I will admit I was wrong.
On the gripping hand,,,
Will you do the same if the roles are reversed?
Perhaps one of us should "die in a fire immediatly" if we are wrong.
You do advocate such things.
Time will tell
